http://reply.papertrans.cn/2/138/13728/13728-21.png
Submitted on: 02 February 2016.
Revised on: 21 March 2016.
Accepted on: 23 April 2016.
___________________International Journal of Mathematics and Physics
http://reply.papertrans.cn/2/138/13728/13728-23.png
http://reply.papertrans.cn/2/138/13728/13728-24.png
http://reply.papertrans.cn/2/138/13728/13728-25.png
Submitted on: 21 October 2017.
Revised on: 27 January 2018.
Accepted on: 27 March 2018.
___________________International Journal of Mathematics and Physics
Submitted on: 05 February 2019.
Revised on: 20 April 2019.
Accepted on: 18 May 2019.
___________________International Journal of Mathematics and Physics
http://reply.papertrans.cn/2/138/13728/13728-28.png
Submitted on: 17 January 2020.
Revised on: 11 April 2020.
Accepted on: 23 April 2020.
___________________International Journal of Mathematics and Physics
Submitted on: 02 April 2014.
Revised on: 29 May 2014.
Accepted on: 14 June 2014.
___________________International Journal of Mathematics and Physics